1790908121 has 2 divisors, whose sum is σ = 1790908122. Its totient is φ = 1790908120.

The previous prime is 1790908111. The next prime is 1790908123. The reversal of 1790908121 is 1218090971.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1706929225 + 83978896 = 41315^2 + 9164^2 .

It is a cyclic number.

It is not a de Polignac number, because 1790908121 - 2³⁰ = 717166297 is a prime.

Together with 1790908123, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1790908123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 895454060 + 895454061.

It is an arithmetic number, because the mean of its divisors is an integer number (895454061).

Almost surely, 2^1790908121 is an apocalyptic number.

It is an amenable number.

1790908121 is a deficient number, since it is larger than the sum of its proper divisors (1).

1790908121 is an equidigital number, since it uses as much as digits as its factorization.

1790908121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9072, while the sum is 38.

The square root of 1790908121 is about 42319.1224034715. The cubic root of 1790908121 is about 1214.3888431132.

The spelling of 1790908121 in words is "one billion, seven hundred ninety million, nine hundred eight thousand, one hundred twenty-one".